code: def get_tsdataset():
      df = get_ts_df()
      return TSDataset.from_pandas(
          df,
          dt_col="datetime",
          target_col=["value 1", "value 2"],
          extra_feature_col=["extra feature 1", "extra feature 2"],
          id_col="id",
      )
  
imports: from unittest import TestCase
  import pytest
  from bigdl.chronos.utils import LazyImport
  import numpy
  from bigdl.chronos.data import TSDataset
  import pandas
  from ..None import op_torch, op_tf2, op_distributed, op_inference
label_desc: Use image node_id 2 for calling a global function with example usage: get_tsdataset() and returns: TSDataset